Originally Posted by guitarmageddon88
Without question you need to move over into the light (intel) with those bad boys. I had a virtually identical setup to you, my first build, of an 1100t, 5870, and 4gb gskill 1333 oc'ed to 1600. As soon as I moved over to 8gb 1866 and a 2600k, not only did the synthetic numbers double and then some, but real world performance and cpu spikes during battlefield greatly decreased. A 2600k at stock speeds eats a highly overclocked 1090t for lunch and ****s it out any day of the week.
Moving from a 5870 to sli 570's was out of this world, then moving to the intel platform from there was also huge. Switching over to 3gb 580's in the next few days so I am anxiously awaiting those numbers. (only because I am not taking a loss on my 570's) Next upgrade is to a 120hz monitor finally. But like I said, you dont need yet another monster card for youre system to stay relevant and future proof. Just remember, AMD is still basically catching up to where NVIDIA has been for a year and some change now with the 500 series. What, you want pci 3.0? Its not going to make that huge of a difference. And someone tell me Im wrong, but isnt 3.0 only able to be used on the x79 chipset right now anyways?
The money youd drop on a 580 could get you a new set of ram, motherboard, and 2500/2600k and perhaps have cash to spare back in your pocket.
dont bother with the 3gb 580s unless your getting the lightning extreme or the classified. the ones evga and zotac have are equal to the 1.5gb models, even at 5760x1080, speaking from experience here, they are not worth it.
look around on google for some recent benchmarks comparing the 3gb and the 1.5gb, all the results are within the margin of error. im considering selling mine when i get back to where my main rig is and swap them out for some 1.5gbs and use the additional money towards a better case.
im not even sure about the x79, but as far as the 3.0 boards, usually on the benchmarks with the same board and the 2.0 next to it, the 2.0 scores higher. mite be a different story with Ivy bridge though.
@ OP, best upgrades for you rite now would be either a 2500k on a z68 or p67, a SSD, 120 hz monitor or anything other than your cards. id suggest start pushing towards intel, and get a ssd, hell even the i3 seems to be more adequate at gaming than the 1090t http://www.anandtech.com/bench/Product/289?vs=146
monitors will probably start coming down soon, OLED screens will probably be getting released over the next 6 months or so, lcd will recieve a drop in price.